The King's Law (Danish: Kongeloven) or Lex Regia (also called the Danish Royal Law of 1665) was the absolutist constitution of Denmark and Norway from 1665 until 1849 and 1814, respectively. It established complete hereditary and absolute monarchy and formalized the king's absolute power, and is regarded the most sovereign form of all the European expressions of absolutism. Some scholars of legal history assert that with Europe's least circumscribed form of absolutism, Denmark "may be considered the most absolute of all the absolute European monarchies." It is the only formal constitution of any absolute monarchy, and has therefore been the subject of considerable historical and academic attention.
The King's Law comprises 40 articles and is divided into seven main chapters. Articles 1 to 7 determine the royal absolute power, and the following articles contain rules on the king's authority and guardianship, on the king's accession and anointing, on the indivisibility of the kingdoms, on princes and princesses, on the king's duty to maintain absolute monarchy, and on the succession.